<template>
  <div ref="floorChart" class="echart" style="width: 100%; height: 100%"></div>
</template>

<script setup lang="ts">
import * as echarts from "echarts";
import "echarts-gl";
import { onMounted, ref, nextTick } from "vue";
const props = defineProps({
  pieNum: Object
});
const open = (): void => {
  var myChart = echarts.init(floorChart.value);
  nextTick(() => {
    window.addEventListener("resize", () => {
      myChart.resize();
    });
  });
  fetchFloor();
};
defineExpose({ open });
const fetchFloor = () => {
  // 生成扇形的曲面参数方程，用于 series-surface.parametricEquation
  function getParametricEquation(
    startRatio: number,
    endRatio: number,
    isSelected: boolean,
    isHovered: boolean,
    k: number,
    h: number
  ) {
    // 计算
    const midRatio = (startRatio + endRatio) / 2;
    const startRadian = startRatio * Math.PI * 2;
    const endRadian = endRatio * Math.PI * 2;
    const midRadian = midRatio * Math.PI * 2;
    // 如果只有一个扇形，则不实现选中效果。
    if (startRatio === 0 && endRatio === 1) {
      isSelected = false;
    }
    // 通过扇形内径/外径的值，换算出辅助参数 k（默认值 1/3）
    k = 1;
    // 计算选中效果分别在 x 轴、y 轴方向上的位移（未选中，则位移均为 0）
    const offsetX = isSelected ? Math.cos(midRadian) * 0.1 : 0;
    const offsetY = isSelected ? Math.sin(midRadian) * 0.1 : 0;
    // 计算高亮效果的放大比例（未高亮，则比例为 1）
    const hoverRate = isHovered ? 1.05 : 1;
    // 返回曲面参数方程
    return {
      u: {
        min: -Math.PI,
        max: Math.PI * 3,
        step: Math.PI / 32
      },
      v: {
        min: 0,
        max: Math.PI * 2,
        step: Math.PI / 20
      },
      x: function (u: number, v: number) {
        if (u < startRadian) {
          return offsetX + Math.cos(startRadian) * (1 + Math.cos(v) * k) * hoverRate;
        }
        if (u > endRadian) {
          return offsetX + Math.cos(endRadian) * (1 + Math.cos(v) * k) * hoverRate;
        }
        return offsetX + Math.cos(u) * (1 + Math.cos(v) * k) * hoverRate;
      },
      y: function (u: number, v: number) {
        if (u < startRadian) {
          return offsetY + Math.sin(startRadian) * (1 + Math.cos(v) * k) * hoverRate;
        }
        if (u > endRadian) {
          return offsetY + Math.sin(endRadian) * (1 + Math.cos(v) * k) * hoverRate;
        }
        return offsetY + Math.sin(u) * (1 + Math.cos(v) * k) * hoverRate;
      },
      z: function (u: number, v: number) {
        if (u < -Math.PI * 0.5) {
          return Math.sin(u);
        }
        if (u > Math.PI * 2.5) {
          return Math.sin(u) * h * 0.1;
        }
        return Math.sin(v) > 0 ? 1 * h * 0.1 : -1;
      }
    };
  }

  /**
   * 绘制3d图
   * @param pieData 总数据
   * @param internalDiameterRatio:透明的空心占比
   * @param distance 视角到主体的距离
   * @param alpha 旋转角度
   * @param pieHeight 立体的高度
   * @param opacity 饼或者环的透明度
   */
  function getPie3D(
    pieData: string | any[],
    internalDiameterRatio: number,
    distance: number,
    alpha: number,
    pieHeight: number,
    opacity = 1
  ) {
    const series = [];
    let sumValue = 0;
    let startValue = 0;
    let endValue = 0;
    const legendData = [];
    const k = typeof internalDiameterRatio !== "undefined" ? (1 - internalDiameterRatio) / (1 + internalDiameterRatio) : 1 / 3;
    // 为每一个饼图数据，生成一个 series-surface 配置
    for (let i = 0; i < pieData.length; i += 1) {
      sumValue += pieData[i].value;
      const seriesItem: any = {
        name: typeof pieData[i].name === "undefined" ? `series${i}` : pieData[i].name,
        type: "surface",
        parametric: true,
        wireframe: {
          show: false
        },
        pieData: pieData[i],
        pieStatus: {
          selected: false,
          hovered: false,
          k: k
        }
      };
      if (typeof pieData[i].itemStyle !== "undefined") {
        const itemStyle: any = {};
        if (typeof pieData[i].itemStyle.color !== "undefined") {
          itemStyle.color = pieData[i].itemStyle.color;
        }
        if (typeof pieData[i].itemStyle.opacity !== "undefined") {
          itemStyle.opacity = pieData[i].itemStyle.opacity;
        }
        seriesItem.itemStyle = itemStyle;
      }
      series.push(seriesItem);
    }
    // 使用上一次遍历时，计算出的数据和 sumValue，调用 getParametricEquation 函数，
    // 向每个 series-surface 传入不同的参数方程 series-surface.parametricEquation，也就是实现每一个扇形。
    for (let i = 0; i < series.length; i += 1) {
      endValue = startValue + series[i].pieData.value;
      series[i].pieData.startRatio = startValue / sumValue;
      series[i].pieData.endRatio = endValue / sumValue;
      // console.log(series[i].pieData.startRatio,
      //   series[i].pieData.endRatio,
      //   false,
      //   false,
      //   k,
      //   series[i].pieData.value)
      series[i].parametricEquation = getParametricEquation(
        series[i].pieData.startRatio,
        series[i].pieData.endRatio,
        false,
        false,
        k,
        series[i].pieData.value
      );
      startValue = endValue;
      legendData.push(series[i].name);
    }
    return series;
  }

  const optionsData = ref([
    {
      name: "离线",
      value: props.pieNum.pieOffline,
      itemStyle: {
        color: "#57CAFF"
        //   opacity: 1,
      }
    },
    {
      name: "在线",
      value: props.pieNum.pieOnline,
      itemStyle: {
        color: "#FFC100"
        //   opacity: 1,
      }
    }
  ]);

  const series = getPie3D(optionsData.value, 0.8, 10, 28, 26, 0.5);

  series.push({
    name: "pie2d",
    type: "pie",
    label: {
      opacity: 1,
      fontSize: 14,
      lineHeight: 20,

      color: "#fff"
    },
    labelLine: {
      length: 20,
      length2: 20
    },
    startAngle: -30, //起始角度，支持范围[0, 360]。
    clockwise: false, //饼图的扇区是否是顺时针排布。上述这两项配置主要是为了对齐3d的样式
    radius: ["20%", "30%"],
    center: ["50%", "50%"],
    data: optionsData.value,
    itemStyle: {
      opacity: 0
    }
  });

  let floorOption = {
    //   legend: {
    //     tooltip: {
    //       show: true,
    //     },
    //     data: ['aa', 'bb', 'cc'],
    //     bottom: '10%',
    //     textStyle: {
    //       color: '#fff',
    //       fontSize: 12,
    //     },
    //   }
    tooltip: {
      formatter: (params: any) => {
        if (params.seriesName !== "mouseoutSeries" && params.seriesName !== "pie2d") {
          let bfb = (
            (floorOption.series[params.seriesIndex].pieData.endRatio -
              floorOption.series[params.seriesIndex].pieData.startRatio) *
            100
          ).toFixed(2);
          return (
            `${params.seriesName}<br/>` +
            `<span style="display:inline-block;margin-right:5px;border-radius:10px;width:10px;height:10px;background-color:${params.color};"></span>` +
            `${bfb}%`
          );
        }
      }
    },
    //   title: {
    //     text: '3D 饼图',
    //     x: 'center',
    //     top: '20',
    //     textStyle: {
    //       color: '#fff',
    //       fontSize: 22,
    //     },
    //   },
    //   backgroundColor: '#333',
    //   labelLine: {
    //     show: true,
    //     lineStyle: {
    //       color: '#7BC0CB',
    //     },
    //   },
    label: {
      show: true,
      position: "outside",
      formatter: "{b}\n{d}%"
    },
    xAxis3D: {
      min: -1,
      max: 1
    },
    yAxis3D: {
      min: -1,
      max: 1
    },
    zAxis3D: {
      min: -1,
      max: 1
    },
    grid3D: {
      show: false,
      boxHeight: 40, // 三维笛卡尔坐标系在三维场景中的高度
      viewControl: {
        alpha: 40,
        beta: 40,
        distance: 500, //调整视角到主体的距离，类似调整zoom
        rotateSensitivity: 0, // 设置为0无法旋转
        zoomSensitivity: 0, // 设置为0无法缩放
        panSensitivity: 0, // 设置为0无法平移
        autoRotate: false // 自动旋转
      }
    },
    series: series
  };

  var myChart = echarts.init(floorChart.value); //这里能拿到floorChart的dom
  myChart.setOption(floorOption);
};

const floorChart = ref();
onMounted(() => {});
</script>

<style lang="less" scoped></style>
